add my mountpoints fact to nagios for the df plugin

lib/facter/mountpoints.rb

@@ -0,0 +1,50 @@
+begin
+
+  mountpoints = []
+  # we show devices, but we avoid outputing duplicate devices
+  devices = []
+  Facter.add("mountpoints") do
+    ignorefs = ["NFS", "nfs", "nfs4", "nfsd", "afs", "binfmt_misc", "proc", "smbfs", 
+                "autofs", "iso9660", "ncpfs", "coda", "devpts", "ftpfs", "devfs", 
+                "mfs", "shfs", "sysfs", "cifs", "lustre_lite", "tmpfs", "usbfs", "udf",
+                "fusectl", "fuse.snapshotfs", "rpc_pipefs"]
+    begin
+      require 'filesystem'
+    rescue Exception => e
+      confine :kernel => :linux
+      ENV["PATH"]="/bin:/sbin:/usr/bin:/usr/sbin"
+      fs_source = nil
+      if FileTest.exists?("/etc/mtab")
+        fs_source = "/etc/mtab" 
+      elsif FileTest.exists?("/proc/mounts")
+        fs_source = "/proc/mounts" 
+      end
+
+      mounts = File.read(fs_source).split("\n")
+      mounts.each do |mount|
+        mount = mount.split(" ")
+        if ((not ignorefs.include?(mount[2])) && (mount[3] !~ /bind/) && (not devices.include?(mount[0])) && (not mountpoints.include?(mount[1])))
+	              mountpoints.push(mount[1])
+        end
+        devices.push(mount[0]) if not devices.include?(mount[0])
+      end
+    else
+      FileSystem.mounts.each do |m| 
+        if ((not ignorefs.include?(m.fstype)) && (m.options !~ /bind/) && !devices.include?(mount[0]))
+          mountpoints.push(m.mount)
+        end
+        devices.push(m.mount) if not devices.include?(m.mount)
+      end
+    end
+    setcode do
+      mountpoints.join(",")
+    end
+  end
+  Facter.add("devices") do
+    setcode do
+      devices.join(",")
+    end
+  end
+
+rescue Exception => e
+end